diff --git a/Elwig/App.xaml.cs b/Elwig/App.xaml.cs
index 1fcbc54..2c8bc6f 100644
--- a/Elwig/App.xaml.cs
+++ b/Elwig/App.xaml.cs
@@ -7,9 +7,6 @@ using Elwig.Helpers;
 using Elwig.Helpers.Weighing;
 using System.Collections.Generic;
 using System.Windows.Threading;
-using System.Globalization;
-using System.Threading;
-using System.Windows.Markup;
 using System.Reflection;
 using Elwig.Helpers.Printing;
 using Elwig.Windows;
@@ -62,7 +59,7 @@ namespace Elwig {
             MainDispatcher = Dispatcher;
             Scales = [];
             CurrentApp = this;
-            OverrideCulture();
+            Utils.OverrideCulture();
 
             var args = Environment.GetCommandLineArgs();
             if (args.Length >= 2) {
@@ -82,23 +79,6 @@ namespace Elwig {
             MainDispatcher.BeginInvoke(HintContextChange);
         }
 
-        private static void OverrideCulture() {
-            var locale = new CultureInfo("de-AT", false);
-            locale.NumberFormat.CurrencyGroupSeparator = Utils.GroupSeparator;
-            locale.NumberFormat.NumberGroupSeparator = Utils.GroupSeparator;
-            locale.NumberFormat.PercentGroupSeparator = Utils.GroupSeparator;
-            CultureInfo.CurrentCulture = locale;
-            CultureInfo.CurrentUICulture = locale;
-            Thread.CurrentThread.CurrentCulture = locale;
-            Thread.CurrentThread.CurrentUICulture = locale;
-            CultureInfo.DefaultThreadCurrentCulture = locale;
-            CultureInfo.DefaultThreadCurrentUICulture = locale;
-            FrameworkElement.LanguageProperty.OverrideMetadata(
-                typeof(FrameworkElement),
-                new FrameworkPropertyMetadata(XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.Name))
-            );
-        }
-
         protected override async void OnStartup(StartupEventArgs evt) {
             Version = new Version(typeof(App).GetTypeInfo().Assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion.Split('+')[0] ?? "0.0.0");
 
diff --git a/Elwig/Helpers/Utils.cs b/Elwig/Helpers/Utils.cs
index f4a3703..1de6c6f 100644
--- a/Elwig/Helpers/Utils.cs
+++ b/Elwig/Helpers/Utils.cs
@@ -28,6 +28,9 @@ using LinqKit;
 using System.Linq.Expressions;
 using Elwig.Models;
 using Microsoft.Win32;
+using System.Globalization;
+using System.Threading;
+using System.Windows.Markup;
 
 namespace Elwig.Helpers {
     public static partial class Utils {
@@ -118,6 +121,23 @@ namespace Elwig.Helpers {
             0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040,
         ];
 
+        public static void OverrideCulture() {
+            var locale = new CultureInfo("de-AT", false);
+            locale.NumberFormat.CurrencyGroupSeparator = Utils.GroupSeparator;
+            locale.NumberFormat.NumberGroupSeparator = Utils.GroupSeparator;
+            locale.NumberFormat.PercentGroupSeparator = Utils.GroupSeparator;
+            CultureInfo.CurrentCulture = locale;
+            CultureInfo.CurrentUICulture = locale;
+            Thread.CurrentThread.CurrentCulture = locale;
+            Thread.CurrentThread.CurrentUICulture = locale;
+            CultureInfo.DefaultThreadCurrentCulture = locale;
+            CultureInfo.DefaultThreadCurrentUICulture = locale;
+            FrameworkElement.LanguageProperty.OverrideMetadata(
+                typeof(FrameworkElement),
+                new FrameworkPropertyMetadata(XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.Name))
+            );
+        }
+
         public static SerialPort OpenSerialConnection(string connection) {
             var m = SerialRegex.Match(connection);
             if (!m.Success)
diff --git a/Elwig/Services/DeliveryService.cs b/Elwig/Services/DeliveryService.cs
index 58d2427..4d90cbb 100644
--- a/Elwig/Services/DeliveryService.cs
+++ b/Elwig/Services/DeliveryService.cs
@@ -462,7 +462,7 @@ namespace Elwig.Services {
                     LNr = newLnr ?? oldDelivery!.LNr,
                     ZwstId = vm.Branch!.ZwstId,
                     LsNr = newLsNr ?? vm.LsNr!,
-                    MgNr = (int)vm.MgNr!,
+                    MgNr = vm.MgNr!.Value,
                     Comment = string.IsNullOrEmpty(vm.Comment) ? null : vm.Comment,
                 };
 
@@ -474,7 +474,7 @@ namespace Elwig.Services {
                     SortId = vm.WineVar!.SortId,
                     AttrId = vm.WineAttr?.AttrId,
                     CultId = vm.WineCult?.CultId,
-                    Kmw = (double)vm.GradationKmw!,
+                    Kmw = vm.GradationKmw!.Value,
                     QualId = vm.WineQualityLevel!.QualId,
                     HkId = vm.WineOrigin!.HkId,
                     KgNr = vm.WineKg?.KgNr,
@@ -488,7 +488,7 @@ namespace Elwig.Services {
                     Acid = vm.Acid,
                     Comment = string.IsNullOrEmpty(vm.PartComment) ? null : vm.PartComment,
 
-                    Weight = (int)vm.Weight!,
+                    Weight = vm.Weight!.Value,
                     IsManualWeighing = vm.IsManualWeighing,
                     ScaleId = vm.ScaleId,
                     WeighingData = vm.WeighingData,
@@ -971,5 +971,13 @@ namespace Elwig.Services {
 
             return (wGrid, gGrid);
         }
+
+        public static async Task DeleteDelivery(string lsnr) {
+            using (var ctx = new AppDbContext()) {
+                await ctx.Deliveries.Where(d => d.LsNr == lsnr).ExecuteDeleteAsync();
+                await ctx.SaveChangesAsync();
+            }
+            App.HintContextChange();
+        }
     }
 }
diff --git a/Elwig/ViewModels/DeliveryAdminViewModel.cs b/Elwig/ViewModels/DeliveryAdminViewModel.cs
index ad8ea42..6e9ed35 100644
--- a/Elwig/ViewModels/DeliveryAdminViewModel.cs
+++ b/Elwig/ViewModels/DeliveryAdminViewModel.cs
@@ -96,10 +96,16 @@ namespace Elwig.ViewModels {
         private IEnumerable<object> _wineCultSource = [];
         [ObservableProperty]
         private string? _gradationOeString;
-        public double? GradationOe => double.TryParse(GradationOeString, out var oe) ? oe : null;
+        public double? GradationOe {
+            get => double.TryParse(GradationOeString, out var oe) ? oe : null;
+            set => GradationOeString = $"{value:0}";
+        }
         [ObservableProperty]
         private string? _gradationKmwString;
-        public double? GradationKmw => double.TryParse(GradationKmwString, out var kmw) ? kmw : null;
+        public double? GradationKmw {
+            get => double.TryParse(GradationKmwString, out var kmw) ? kmw : null;
+            set => GradationKmwString = $"{value:0.0}";
+        }
         [ObservableProperty]
         private WineQualLevel? _wineQualityLevel;
         [ObservableProperty]
@@ -152,10 +158,16 @@ namespace Elwig.ViewModels {
         private string? _partComment;
         [ObservableProperty]
         private string? _temperatureString;
-        public double? Temperature => double.TryParse(TemperatureString, out var t) ? t : null;
+        public double? Temperature {
+            get => double.TryParse(TemperatureString, out var t) ? t : null;
+            set => TemperatureString = $"{value:0.0}";
+        }
         [ObservableProperty]
         private string? _acidString;
-        public double? Acid => double.TryParse(AcidString, out var a) ? a : null;
+        public double? Acid {
+            get => double.TryParse(AcidString, out var a) ? a : null;
+            set => AcidString = $"{value:0.0}";
+        }
         [ObservableProperty]
         private bool _isLesewagen;
         [ObservableProperty]
diff --git a/Elwig/Windows/DeliveryAdminWindow.xaml.cs b/Elwig/Windows/DeliveryAdminWindow.xaml.cs
index 1fd899b..14560a7 100644
--- a/Elwig/Windows/DeliveryAdminWindow.xaml.cs
+++ b/Elwig/Windows/DeliveryAdminWindow.xaml.cs
@@ -172,9 +172,11 @@ namespace Elwig.Windows {
                 Title = $"Traubentransportscheinliste (BKI) speichern unter - Elwig"
             };
             if (d.ShowDialog() == true) {
-                Mouse.OverrideCursor = Cursors.AppStarting;
-                using var file = new Bki(d.FileName);
-                await file.ExportAsync(year);
+                Mouse.OverrideCursor = Cursors.Wait;
+                await Task.Run(async () => {
+                    using var file = new Bki(d.FileName);
+                    await file.ExportAsync(year);
+                });
                 Mouse.OverrideCursor = null;
             }
         }
@@ -933,12 +935,13 @@ namespace Elwig.Windows {
                 "Lieferung löschen", MessageBoxButton.OKCancel, MessageBoxImage.Warning, MessageBoxResult.Cancel);
             if (r == MessageBoxResult.OK) {
                 Mouse.OverrideCursor = Cursors.AppStarting;
-                using (var ctx = new AppDbContext()) {
-                    ctx.Remove(d);
-                    await ctx.SaveChangesAsync();
+                try {
+                    await DeliveryService.DeleteDelivery(d.LsNr);
+                } catch (Exception exc) {
+                    var str = "Der Eintrag konnte nicht in der Datenbank aktualisiert werden!\n\n" + exc.Message;
+                    if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message;
+                    MessageBox.Show(str, "Lieferung löschen", MessageBoxButton.OK, MessageBoxImage.Error);
                 }
-                await RefreshList();
-                await RefreshDeliveryParts();
                 Mouse.OverrideCursor = null;
             }
         }
diff --git a/Tests/DatabaseSetup.cs b/Tests/DatabaseSetup.cs
index 3ad9e55..7e5a432 100644
--- a/Tests/DatabaseSetup.cs
+++ b/Tests/DatabaseSetup.cs
@@ -30,6 +30,11 @@ namespace Tests {
             await BillingData.Init();
         }
 
+        [OneTimeSetUp]
+        public void Setup_4_Culture() {
+            Utils.OverrideCulture();
+        }
+
         [OneTimeTearDown]
         public async Task TeardownDatabase() {
             AppDbContext.ConnectionStringOverride = null;
diff --git a/Tests/Resources/Sql/ServiceDelete.sql b/Tests/Resources/Sql/ServiceDelete.sql
index b5cf09a..553a721 100644
--- a/Tests/Resources/Sql/ServiceDelete.sql
+++ b/Tests/Resources/Sql/ServiceDelete.sql
@@ -7,3 +7,5 @@ DELETE FROM season;
 DELETE FROM area_commitment;
 DELETE FROM area_commitment_type;
 DELETE FROM member WHERE mgnr >= 200;
+DELETE FROM wine_cultivation;
+DELETE FROM wine_attribute;
diff --git a/Tests/Resources/Sql/ServiceInsert.sql b/Tests/Resources/Sql/ServiceInsert.sql
index b053556..c947db7 100644
--- a/Tests/Resources/Sql/ServiceInsert.sql
+++ b/Tests/Resources/Sql/ServiceInsert.sql
@@ -1,5 +1,12 @@
 -- inserts for ServiceTests
 
+
+INSERT INTO wine_cultivation (cultid, name, description) VALUES
+('B',   'Bio', 'AT-BIO-302');
+
+INSERT INTO wine_attribute (attrid, name, active, max_kg_per_ha, strict, fill_lower) VALUES
+('K', 'Kabinett',  TRUE, NULL, FALSE, 0);
+
 INSERT INTO member (mgnr, given_name, name, zwstid, volllieferant, buchführend, country, postal_dest, address, default_kgnr, iban, lfbis_nr, ustid_nr) VALUES
 (201, 'Theodor', 'Testbauer',  'X', FALSE, FALSE, 40, 222303524, 'Teststraße 1', 06109, 'AT811234567890123457', '0123463',         NULL ),
 (202, 'Thomas',  'Testmann',   'X', FALSE, FALSE, 40, 222303524, 'Teststraße 2', 06109, 'AT541234567890123458', '0123471', 'ATU12345684'),
@@ -30,21 +37,93 @@ INSERT INTO area_commitment (fbnr, mgnr, vtrgid, cultid, area, kgnr, gstnr, rdnr
 
 
 INSERT INTO season (year, currency, min_kg_per_bs, max_kg_per_bs, penalty_per_kg, penalty_amount, penalty_none, start_date, end_date) VALUES
-(2021, 'EUR', 2000, 4000, NULL, NULL, NULL, NULL, NULL);
+(2021, 'EUR', 2000, 4000, NULL, NULL, NULL, NULL, NULL),
+(2022, 'EUR', 2000, 4000, NULL, NULL, NULL, NULL, NULL),
+(2023, 'EUR', 2000, 4000, NULL, NULL, NULL, NULL, NULL);
 
 INSERT INTO modifier (year, modid, ordering, name, abs, rel, active) VALUES
-(2021, 'S', 0, 'Geschädigte Trauben', NULL, -0.1, TRUE);
+(2021, 'S', 0, 'Geschädigte Trauben', NULL, -0.1, TRUE),
+(2022, 'S', 0, 'Geschädigte Trauben', NULL, -0.1, TRUE);
 
 INSERT INTO delivery (mgnr, year, did, date, time, zwstid, lnr) VALUES
-(203, 2021, 1, '2021-10-01', NULL, 'X', 1),
-(204, 2021, 2, '2021-10-01', NULL, 'X', 2);
+(203, 2021,  1, '2021-10-01', NULL, 'X', 1),
+(204, 2021,  2, '2021-10-01', NULL, 'X', 2),
+(101, 2022,  1, '2022-09-29', NULL, 'X', 1),
+(101, 2022,  2, '2022-09-30', NULL, 'X', 1),
+(101, 2023,  1, '2023-10-01', NULL, 'X', 1),
+(101, 2023,  2, '2023-10-01', NULL, 'X', 2),
+(101, 2023,  3, '2023-10-01', NULL, 'X', 3),
+(101, 2023,  4, '2023-10-01', NULL, 'X', 4),
+(101, 2023,  5, '2023-10-02', NULL, 'X', 1),
+(101, 2023,  6, '2023-10-03', NULL, 'X', 1),
+(101, 2023,  7, '2023-10-04', NULL, 'X', 1),
+(101, 2023,  8, '2023-10-05', NULL, 'X', 1),
+(101, 2023,  9, '2023-10-06', NULL, 'X', 1),
+(101, 2023, 10, '2023-10-06', NULL, 'X', 2),
+(101, 2023, 11, '2023-10-07', NULL, 'X', 1),
+(101, 2023, 12, '2023-10-07', NULL, 'X', 2),
+(101, 2023, 13, '2023-10-08', NULL, 'X', 1),
+(101, 2023, 14, '2023-10-08', NULL, 'X', 2),
+(101, 2023, 15, '2023-10-09', NULL, 'X', 1),
+(101, 2023, 16, '2023-10-09', NULL, 'X', 2),
+(101, 2023, 17, '2023-10-10', NULL, 'X', 1),
+(101, 2023, 18, '2023-10-10', NULL, 'X', 2),
+(101, 2023, 19, '2023-10-10', NULL, 'X', 3);
+
 INSERT INTO delivery_part (year, did, dpnr, sortid, attrid, cultid, weight, kmw, qualid, hkid, kgnr, net_weight, manual_weighing, spl_check, scale_id, weighing_data, weighing_reason) VALUES
-(2021, 1, 1, 'GV', NULL, NULL, 3500, 15, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
-(2021, 2, 1, 'GV', NULL, NULL, 4000, 17, 'KAB', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
-(2021, 2, 2, 'GV', NULL, NULL, 4000, 16, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL);
+(2021,  1, 1, 'GV', NULL, NULL, 3500, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2021,  2, 1, 'GV', NULL, NULL, 4000, 17.0, 'KAB', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2021,  2, 2, 'GV', NULL, NULL, 4000, 16.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2022,  1, 1, 'GV', NULL, NULL, 3700, 16.5, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2022,  1, 2, 'GV', NULL, NULL, 3700, 16.5, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  1, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  1, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  1, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  2, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  2, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  2, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  3, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  3, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  3, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  4, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  4, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  4, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  5, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  5, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  5, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  6, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  6, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  6, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  7, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  7, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  7, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  8, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  8, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  8, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  9, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  9, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023,  9, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 10, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 11, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 11, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 11, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 12, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 13, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 13, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 13, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 14, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 15, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 15, 2, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 15, 3, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 16, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 17, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 18, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL),
+(2023, 19, 1, 'GV', NULL, NULL, 1000, 15.0, 'QUW', 'WLNO', 15224, TRUE, FALSE, FALSE, NULL, NULL, NULL);
+
 INSERT INTO delivery_part_modifier (year, did, dpnr, modid) VALUES
 (2021, 1, 1, 'S'),
-(2021, 2, 2, 'S');
+(2021, 2, 2, 'S'),
+(2022, 1, 2, 'S');
 
 INSERT INTO payment_variant (year, avnr, name, date, transfer_date, test_variant, calc_time, comment, data) VALUES
 (2021, 1, 'Probevariante', '2022-01-15', '2022-01-15', TRUE, NULL, NULL, '{"mode":"elwig","version":1,"payment":0.5,"curves":[]}');
diff --git a/Tests/ServiceTests/DeliveryServiceTest.cs b/Tests/ServiceTests/DeliveryServiceTest.cs
new file mode 100644
index 0000000..344ac9c
--- /dev/null
+++ b/Tests/ServiceTests/DeliveryServiceTest.cs
@@ -0,0 +1,847 @@
+using Elwig.Helpers;
+using Elwig.Models.Entities;
+using Elwig.Services;
+using Elwig.ViewModels;
+using Microsoft.EntityFrameworkCore;
+
+namespace Tests.ServiceTests {
+    [TestFixture]
+    public class DeliveryServiceTest {
+
+        private static async Task InitViewModel(DeliveryAdminViewModel vm) {
+            using var ctx = new AppDbContext();
+            vm.MemberSource = await ctx.Members.ToListAsync();
+            vm.BranchSource = await ctx.Branches.ToListAsync();
+            vm.WineVarSource = await ctx.WineVarieties.ToListAsync();
+            List<object> attrs = (await ctx.WineAttributes.ToListAsync()).Cast<object>().ToList();
+            attrs.Insert(0, new NullItem());
+            vm.WineAttrSource = attrs;
+            List<object> cults = (await ctx.WineCultivations.ToListAsync()).Cast<object>().ToList();
+            cults.Insert(0, new NullItem());
+            vm.WineCultSource = cults;
+            vm.WineQualityLevelSource = await ctx.WineQualityLevels.ToListAsync();
+            vm.WineOriginSource = await ctx.WineOrigins.ToListAsync();
+            vm.WineKgSource = await ctx.Katastralgemeinden.ToListAsync();
+            vm.ModifiersSource = await ctx.Modifiers.Where(m => m.Year == 2022).ToListAsync();
+        }
+
+        private static async Task<Delivery?> GetDelivery(string lsnr) {
+            using var ctx = new AppDbContext();
+            return await ctx.Deliveries
+                .Where(d => d.LsNr == lsnr)
+                .Include(d => d.Parts)
+                .ThenInclude(p => p.PartModifiers)
+                .ThenInclude(m => m.Modifier)
+                .AsSplitQuery()
+                .FirstOrDefaultAsync();
+        }
+
+        private static DeliveryPart[] GetParts(Delivery d) {
+            return [.. d.Parts.OrderBy(p => p.DPNr)];
+        }
+
+        [Test]
+        public async Task TestCreate_01_Minimal() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            vm.Date = "01.10.2022";
+            vm.Branch = vm.BranchSource.First();
+            vm.MgNr = 101;
+            vm.Member = vm.MemberSource.First(m => m.MgNr == vm.MgNr);
+            vm.SortId = "GV";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.GradationKmw = 15.0;
+            vm.GradationOe = 73;
+            vm.Weight = 1234;
+            vm.IsManualWeighing = true;
+            vm.IsNetWeight = false;
+            vm.WineQualityLevel = vm.WineQualityLevelSource.First(l => l.QualId == "QUW");
+            vm.WineOrigin = vm.WineOriginSource.First(o => o.HkId == "WLNO");
+
+            var p1 = await vm.UpdateDeliveryPart(2022, null, null, false, false, true);
+            Assert.That(p1.Delivery.LsNr, Is.EqualTo("20221001X001"));
+
+            var d = await GetDelivery("20221001X001");
+
+            Assert.That(d, Is.Not.Null);
+            Assert.That(d.Parts, Has.Count.EqualTo(1));
+            var p = d.Parts.First();
+            Assert.That(p, Is.Not.Null);
+            Assert.Multiple(() => {
+                Assert.That(d.LsNr, Is.EqualTo("20221001X001"));
+                Assert.That(d.Date, Is.EqualTo(new DateOnly(2022, 10, 1)));
+                Assert.That(d.ZwstId, Is.EqualTo("X"));
+                Assert.That(d.MgNr, Is.EqualTo(101));
+                Assert.That(p.SortId, Is.EqualTo("GV"));
+                Assert.That(p.AttrId, Is.Null);
+                Assert.That(p.CultId, Is.Null);
+                Assert.That(p.Kmw, Is.EqualTo(15.0));
+                Assert.That(p.Oe, Is.EqualTo(73));
+                Assert.That(p.QualId, Is.EqualTo("QUW"));
+                Assert.That(p.Weight, Is.EqualTo(1234));
+                Assert.That(p.IsNetWeight, Is.False);
+                Assert.That(p.IsManualWeighing, Is.True);
+                Assert.That(p.HkId, Is.EqualTo("WLNO"));
+            });
+
+            vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+            Assert.DoesNotThrow(() => {
+                vm.FillInputs(d);
+                vm.FillInputs(p);
+            });
+            Assert.Multiple(() => {
+                Assert.That(vm.LsNr, Is.EqualTo("20221001X001"));
+                Assert.That(vm.Date, Is.EqualTo("01.10.2022"));
+                Assert.That(vm.Branch?.ZwstId, Is.EqualTo("X"));
+                Assert.That(vm.MgNr, Is.EqualTo(101));
+                Assert.That(vm.SortId, Is.EqualTo("GV"));
+                Assert.That(vm.WineAttr?.AttrId, Is.Null);
+                Assert.That(vm.WineCult?.CultId, Is.Null);
+                Assert.That(vm.GradationKmw, Is.EqualTo(15.0));
+                Assert.That(vm.WineQualityLevel?.QualId, Is.EqualTo("QUW"));
+                Assert.That(vm.Weight, Is.EqualTo(1234));
+                Assert.That(vm.IsNetWeight, Is.False);
+                Assert.That(vm.IsManualWeighing, Is.True);
+                Assert.That(vm.WineOrigin?.HkId, Is.EqualTo("WLNO"));
+            });
+        }
+
+        [Test]
+        public async Task TestCreate_02_Advanced() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            vm.Date = "02.10.2022";
+            vm.Branch = vm.BranchSource.First();
+            vm.MgNr = 102;
+            vm.Member = vm.MemberSource.First(m => m.MgNr == vm.MgNr);
+            vm.SortId = "ZW";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.WineAttr = vm.WineAttrSource.Skip(1).First() as WineAttr;
+            vm.WineCult = vm.WineCultSource.Skip(1).First() as WineCult;
+            vm.GradationKmw = 15.9;
+            vm.GradationOe = 78;
+            vm.Weight = 3456;
+            vm.IsManualWeighing = false;
+            vm.IsNetWeight = true;
+            vm.WeighingData = "{}";
+            vm.WineQualityLevel = vm.WineQualityLevelSource.First(l => l.QualId == "QUW");
+            vm.WineOrigin = vm.WineOriginSource.First(o => o.HkId == "WLNO");
+            vm.Modifiers.Add(vm.ModifiersSource.First());
+
+            var p1 = await vm.UpdateDeliveryPart(2022, null, null, false, false, true);
+            Assert.That(p1.Delivery.LsNr, Is.EqualTo("20221002X001"));
+
+            var d = await GetDelivery("20221002X001");
+
+            Assert.That(d, Is.Not.Null);
+            Assert.That(d.Parts, Has.Count.EqualTo(1));
+            var p = d.Parts.First();
+            Assert.That(p, Is.Not.Null);
+            Assert.Multiple(() => {
+                Assert.That(d.LsNr, Is.EqualTo("20221002X001"));
+                Assert.That(d.Date, Is.EqualTo(new DateOnly(2022, 10, 2)));
+                Assert.That(d.ZwstId, Is.EqualTo("X"));
+                Assert.That(d.MgNr, Is.EqualTo(102));
+                Assert.That(p.SortId, Is.EqualTo("ZW"));
+                Assert.That(p.AttrId, Is.Not.Null);
+                Assert.That(p.CultId, Is.Not.Null);
+                Assert.That(p.Kmw, Is.EqualTo(15.9));
+                Assert.That(p.Oe, Is.EqualTo(78));
+                Assert.That(p.QualId, Is.EqualTo("QUW"));
+                Assert.That(p.Weight, Is.EqualTo(3456));
+                Assert.That(p.IsNetWeight, Is.True);
+                Assert.That(p.IsManualWeighing, Is.False);
+                Assert.That(p.WeighingData, Is.EqualTo("{}"));
+                Assert.That(p.HkId, Is.EqualTo("WLNO"));
+                Assert.That(p.Modifiers.Count(), Is.EqualTo(1));
+            });
+
+            vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+            Assert.DoesNotThrow(() => {
+                vm.FillInputs(d);
+                vm.FillInputs(p);
+            });
+            Assert.Multiple(() => {
+                Assert.That(vm.LsNr, Is.EqualTo("20221002X001"));
+                Assert.That(vm.Date, Is.EqualTo("02.10.2022"));
+                Assert.That(vm.Branch?.ZwstId, Is.EqualTo("X"));
+                Assert.That(vm.MgNr, Is.EqualTo(102));
+                Assert.That(vm.SortId, Is.EqualTo("ZW"));
+                Assert.That(vm.WineAttr?.AttrId, Is.Not.Null);
+                Assert.That(vm.WineCult?.CultId, Is.Not.Null);
+                Assert.That(vm.GradationKmw, Is.EqualTo(15.9));
+                Assert.That(vm.WineQualityLevel?.QualId, Is.EqualTo("QUW"));
+                Assert.That(vm.Weight, Is.EqualTo(3456));
+                Assert.That(vm.IsNetWeight, Is.True);
+                Assert.That(vm.IsManualWeighing, Is.False);
+                Assert.That(vm.WeighingData, Is.EqualTo("{}"));
+                Assert.That(vm.WineOrigin?.HkId, Is.EqualTo("WLNO"));
+                Assert.That(vm.Modifiers, Has.Count.EqualTo(1));
+            });
+        }
+
+        [Test]
+        public async Task TestCreate_03_TwoParts() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            vm.Date = "03.10.2022";
+            vm.Branch = vm.BranchSource.First();
+            vm.MgNr = 101;
+            vm.Member = vm.MemberSource.First(m => m.MgNr == vm.MgNr);
+            vm.SortId = "GV";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.GradationKmw = 15.0;
+            vm.GradationOe = 73;
+            vm.WineQualityLevel = vm.WineQualityLevelSource.First(l => l.QualId == "QUW");
+            vm.Weight = 1234;
+            vm.IsManualWeighing = true;
+            vm.IsNetWeight = true;
+            vm.WineOrigin = vm.WineOriginSource.First(o => o.HkId == "WLNO");
+            var p1 = await vm.UpdateDeliveryPart(2022, null, null, false, false, true);
+
+            Assert.That(p1.Delivery.LsNr, Is.EqualTo("20221003X001"));
+            vm.FillInputs(p1.Delivery);
+
+            vm.SortId = "WR";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.GradationKmw = 18.0;
+            vm.GradationOe = 89;
+            vm.WineQualityLevel = vm.WineQualityLevelSource.First(l => l.QualId == "KAB");
+            vm.Weight = 2345;
+            var p2 = await vm.UpdateDeliveryPart(p1.Year, p1.DId, null, false, false, true);
+
+            Assert.That(p2.Delivery.LsNr, Is.EqualTo("20221003X001"));
+
+            var d = await GetDelivery("20221003X001");
+
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                Assert.That(d.Parts, Has.Count.EqualTo(2));
+                Assert.That(d.MgNr, Is.EqualTo(101));
+            });
+            var p = d.Parts.First();
+            Assert.That(p, Is.Not.Null);
+            Assert.Multiple(() => {
+                Assert.That(p.DPNr, Is.EqualTo(1));
+                Assert.That(p.SortId, Is.EqualTo("GV"));
+            });
+            p = d.Parts.Skip(1).First();
+            Assert.That(p, Is.Not.Null);
+            Assert.Multiple(() => {
+                Assert.That(p.DPNr, Is.EqualTo(2));
+                Assert.That(p.SortId, Is.EqualTo("WR"));
+            });
+        }
+
+        [Test]
+        public async Task TestCreate_04_ChangeMember() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            vm.Date = "04.10.2022";
+            vm.Branch = vm.BranchSource.First();
+            vm.MgNr = 101;
+            vm.Member = vm.MemberSource.First(m => m.MgNr == vm.MgNr);
+            vm.SortId = "GV";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.GradationKmw = 15.0;
+            vm.GradationOe = 73;
+            vm.WineQualityLevel = vm.WineQualityLevelSource.First(l => l.QualId == "QUW");
+            vm.Weight = 1234;
+            vm.IsManualWeighing = true;
+            vm.IsNetWeight = true;
+            vm.WineOrigin = vm.WineOriginSource.First(o => o.HkId == "WLNO");
+            var p1 = await vm.UpdateDeliveryPart(2022, null, null, false, false, true);
+
+            Assert.That(p1.Delivery.LsNr, Is.EqualTo("20221004X001"));
+            vm.FillInputs(p1.Delivery);
+
+            vm.MgNr = 102;
+            vm.Member = vm.MemberSource.First(m => m.MgNr == vm.MgNr);
+            vm.SortId = "GV";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.GradationKmw = 15.0;
+            vm.GradationOe = 73;
+            vm.WineQualityLevel = vm.WineQualityLevelSource.First(l => l.QualId == "QUW");
+            vm.Weight = 1234;
+            vm.IsManualWeighing = true;
+            vm.IsNetWeight = true;
+            vm.WineOrigin = vm.WineOriginSource.First(o => o.HkId == "WLNO");
+
+            var p2 = await vm.UpdateDeliveryPart(p1.Year, p1.DId, null, false, false, true);
+
+            Assert.That(p2.Delivery.LsNr, Is.EqualTo("20221004X001"));
+
+            var d = await GetDelivery("20221004X001");
+
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                Assert.That(d.Parts, Has.Count.EqualTo(2));
+                Assert.That(d.MgNr, Is.EqualTo(102));
+            });
+        }
+
+        [Test]
+        public async Task TestCreate_05_LNrChanged() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            vm.Date = "29.09.2022";
+            vm.Branch = vm.BranchSource.First();
+            vm.LsNr = "20220929X001";  // "old" LNr, simulated change in DB
+            vm.MgNr = 101;
+            vm.Member = vm.MemberSource.First(m => m.MgNr == vm.MgNr);
+            vm.SortId = "GV";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.GradationKmw = 15.0;
+            vm.GradationOe = 73;
+            vm.WineQualityLevel = vm.WineQualityLevelSource.First(l => l.QualId == "QUW");
+            vm.Weight = 1234;
+            vm.IsManualWeighing = true;
+            vm.IsNetWeight = true;
+            vm.WineOrigin = vm.WineOriginSource.First(o => o.HkId == "WLNO");
+            var p1 = await vm.UpdateDeliveryPart(2022, null, null, false, false, true);
+
+            Assert.That(p1.Delivery.LsNr, Is.EqualTo("20220929X002"));
+
+            var d = GetDelivery("20220929X002");
+            Assert.That(d, Is.Not.Null);
+        }
+
+        [Test]
+        public async Task TestUpdate_01_Simple() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            var d = await GetDelivery("20231010X001");
+            Assert.That(d, Is.Not.Null);
+            var p = d.Parts.First();
+            Assert.That(p, Is.Not.Null);
+            Assert.DoesNotThrow(() => {
+                vm.FillInputs(d);
+                vm.FillInputs(p);
+            });
+
+            vm.SortId = "WR";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.GradationKmw = 15.9;
+            vm.GradationOe = 79;
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.UpdateDeliveryPart(vm, p.Year, p.DId, p.DPNr, false, false, true));
+
+            d = await GetDelivery("20231010X001");
+            Assert.That(d, Is.Not.Null);
+            p = d.Parts.First();
+            Assert.That(p, Is.Not.Null);
+
+            vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+            Assert.DoesNotThrow(() => {
+                vm.FillInputs(d);
+                vm.FillInputs(p);
+            });
+            Assert.Multiple(() => {
+                Assert.That(vm.SortId, Is.EqualTo("WR"));
+                Assert.That(vm.GradationKmw, Is.EqualTo(15.9));
+            });
+        }
+
+        [Test]
+        public async Task TestUpdate_02_Member() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            var d = await GetDelivery("20231010X002");
+            Assert.That(d, Is.Not.Null);
+            var p = d.Parts.First();
+            Assert.That(p, Is.Not.Null);
+            Assert.DoesNotThrow(() => {
+                vm.FillInputs(d);
+                vm.FillInputs(p);
+            });
+            Assert.That(d.MgNr, Is.EqualTo(101));
+
+            vm.SortId = "GV";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.MgNr = 102;
+            vm.Member = vm.MemberSource.First(m => m.MgNr == vm.MgNr);
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.UpdateDeliveryPart(vm, p.Year, p.DId, p.DPNr, false, false, true));
+
+            d = await GetDelivery("20231010X002");
+            Assert.That(d, Is.Not.Null);
+            Assert.That(d.MgNr, Is.EqualTo(102));
+        }
+
+        [Test]
+        public async Task TestUpdate_03_DateAndTime() {
+            var vm = new DeliveryAdminViewModel();
+            await InitViewModel(vm);
+
+            var d = await GetDelivery("20231015X001");
+            Assert.That(d, Is.Null);
+            d = await GetDelivery("20231010X003");
+            Assert.That(d, Is.Not.Null);
+            var p = d.Parts.First();
+            Assert.That(p, Is.Not.Null);
+            Assert.DoesNotThrow(() => {
+                vm.FillInputs(d);
+                vm.FillInputs(p);
+            });
+            Assert.That(d.MgNr, Is.EqualTo(101));
+
+            vm.SortId = "GV";
+            vm.WineVar = vm.WineVarSource.First(v => v.SortId == vm.SortId);
+            vm.Date = "15.10.2023";
+            vm.Time = "12:00";
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.UpdateDeliveryPart(vm, p.Year, p.DId, p.DPNr, true, true, false));
+
+            d = await GetDelivery("20231010X003");
+            Assert.That(d, Is.Null);
+            d = await GetDelivery("20231015X001");
+            Assert.That(d, Is.Not.Null);
+        }
+
+        [Test]
+        public async Task TestSplit_01_Depreciate_One() {
+            var d = await GetDelivery("20231001X001");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(3));
+                Assert.That(ps[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps[0].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[1].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[2].QualId, Is.Not.EqualTo("WEI"));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.DepreciateDelivery(d.Year, d.DId, [1000, 0, 0]));
+            d = await GetDelivery("20231001X001");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(3));
+                Assert.That(ps[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps[0].QualId, Is.EqualTo("WEI"));
+                Assert.That(ps[1].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[2].QualId, Is.Not.EqualTo("WEI"));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_02_Depreciate_Partial() {
+            var d = await GetDelivery("20231001X002");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(3));
+                Assert.That(ps[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps[0].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[1].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[2].QualId, Is.Not.EqualTo("WEI"));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.DepreciateDelivery(d.Year, d.DId, [600, 0, 0]));
+            d = await GetDelivery("20231001X002");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(4));
+                Assert.That(ps[0].Weight, Is.EqualTo(400));
+                Assert.That(ps[0].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[1].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[2].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[3].Weight, Is.EqualTo(600));
+                Assert.That(ps[3].QualId, Is.EqualTo("WEI"));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_03_Depreciate_Mixed() {
+            var d = await GetDelivery("20231001X003");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(3));
+                Assert.That(ps[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps[0].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps[1].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[2].QualId, Is.Not.EqualTo("WEI"));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.DepreciateDelivery(d.Year, d.DId, [1000, 700, -5]));
+            d = await GetDelivery("20231001X003");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(4));
+                Assert.That(ps[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps[0].QualId, Is.EqualTo("WEI"));
+                Assert.That(ps[1].Weight, Is.EqualTo(300));
+                Assert.That(ps[1].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps[2].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[3].Weight, Is.EqualTo(700));
+                Assert.That(ps[3].QualId, Is.EqualTo("WEI"));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_04_Depreciate_Complete() {
+            var d = await GetDelivery("20231001X004");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(3));
+                Assert.That(ps[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps[0].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps[1].QualId, Is.Not.EqualTo("WEI"));
+                Assert.That(ps[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps[2].QualId, Is.Not.EqualTo("WEI"));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.DepreciateDelivery(d.Year, d.DId, [1000, 1100, int.MaxValue]));
+            d = await GetDelivery("20231001X004");
+            Assert.That(d, Is.Not.Null);
+            Assert.Multiple(() => {
+                var ps = GetParts(d);
+                Assert.That(ps, Has.Length.EqualTo(3));
+                Assert.That(ps[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps[0].QualId, Is.EqualTo("WEI"));
+                Assert.That(ps[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps[1].QualId, Is.EqualTo("WEI"));
+                Assert.That(ps[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps[2].QualId, Is.EqualTo("WEI"));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_05_OtherMember_One() {
+            var d1 = await GetDelivery("20231002X001");
+            var d2 = await GetDelivery("20231002X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                Assert.That(d1.MgNr, Is.EqualTo(101));
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToMember(d1.Year, d1.DId, [1000, 0, 0], 102));
+            d1 = await GetDelivery("20231002X001");
+            d2 = await GetDelivery("20231002X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(d1.MgNr, Is.EqualTo(101));
+                Assert.That(d2.MgNr, Is.EqualTo(102));
+                Assert.That(ps1, Has.Length.EqualTo(2));
+                Assert.That(ps1[0].DPNr, Is.EqualTo(2));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].DPNr, Is.EqualTo(3));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(1));
+                Assert.That(ps2[0].DPNr, Is.EqualTo(1));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_06_OtherMember_Partial() {
+            var d1 = await GetDelivery("20231003X001");
+            var d2 = await GetDelivery("20231003X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                Assert.That(d1.MgNr, Is.EqualTo(101));
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToMember(d1.Year, d1.DId, [400, -1, -2], 102));
+            d1 = await GetDelivery("20231003X001");
+            d2 = await GetDelivery("20231003X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(d1.MgNr, Is.EqualTo(101));
+                Assert.That(d2.MgNr, Is.EqualTo(102));
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(600));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(1));
+                Assert.That(ps2[0].Weight, Is.EqualTo(400));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_07_OtherMember_Mixed() {
+            var d1 = await GetDelivery("20231004X001");
+            var d2 = await GetDelivery("20231004X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                Assert.That(d1.MgNr, Is.EqualTo(101));
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToMember(d1.Year, d1.DId, [200, 1000, int.MinValue], 102));
+            d1 = await GetDelivery("20231004X001");
+            d2 = await GetDelivery("20231004X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(d1.MgNr, Is.EqualTo(101));
+                Assert.That(d2.MgNr, Is.EqualTo(102));
+                Assert.That(ps1, Has.Length.EqualTo(2));
+                Assert.That(ps1[0].DPNr, Is.EqualTo(1));
+                Assert.That(ps1[0].Weight, Is.EqualTo(800));
+                Assert.That(ps1[1].DPNr, Is.EqualTo(3));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(2));
+                Assert.That(ps2[0].DPNr, Is.EqualTo(1));
+                Assert.That(ps2[0].Weight, Is.EqualTo(200));
+                Assert.That(ps2[1].DPNr, Is.EqualTo(2));
+                Assert.That(ps2[1].Weight, Is.EqualTo(1000));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_08_OtherMember_Complete() {
+            var d1 = await GetDelivery("20231005X001");
+            var d2 = await GetDelivery("20231005X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                Assert.That(d1.MgNr, Is.EqualTo(101));
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToMember(d1.Year, d1.DId, [1000, int.MaxValue, 1100], 102));
+            d1 = await GetDelivery("20231005X001");
+            d2 = await GetDelivery("20231005X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps2 = GetParts(d2);
+                Assert.That(d2.MgNr, Is.EqualTo(102));
+                Assert.That(ps2, Has.Length.EqualTo(3));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[2].Weight, Is.EqualTo(1000));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_09_OtherDelivery_One() {
+            var d1 = await GetDelivery("20231006X001");
+            var d2 = await GetDelivery("20231006X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(1));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToLsNr(d1.Year, d1.DId, [0, 1000, -4], d2.LsNr));
+            d1 = await GetDelivery("20231006X001");
+            d2 = await GetDelivery("20231006X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(ps1, Has.Length.EqualTo(2));
+                Assert.That(ps1[0].DPNr, Is.EqualTo(1));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].DPNr, Is.EqualTo(3));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(2));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[1].Weight, Is.EqualTo(1000));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_10_OtherDelivery_Partial() {
+            var d1 = await GetDelivery("20231007X001");
+            var d2 = await GetDelivery("20231007X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(1));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToLsNr(d1.Year, d1.DId, [0, 300, int.MinValue], d2.LsNr));
+            d1 = await GetDelivery("20231007X001");
+            d2 = await GetDelivery("20231007X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(700));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(2));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[1].Weight, Is.EqualTo(300));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_11_OtherDelivery_Mixed() {
+            var d1 = await GetDelivery("20231008X001");
+            var d2 = await GetDelivery("20231008X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(1));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToLsNr(d1.Year, d1.DId, [850, 1000, -4], d2.LsNr));
+            d1 = await GetDelivery("20231008X001");
+            d2 = await GetDelivery("20231008X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(ps1, Has.Length.EqualTo(2));
+                Assert.That(ps1[0].DPNr, Is.EqualTo(1));
+                Assert.That(ps1[0].Weight, Is.EqualTo(150));
+                Assert.That(ps1[1].DPNr, Is.EqualTo(3));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(3));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[1].Weight, Is.EqualTo(850));
+                Assert.That(ps2[2].Weight, Is.EqualTo(1000));
+            });
+        }
+
+        [Test]
+        public async Task TestSplit_12_OtherDelivery_Complete() {
+            var d1 = await GetDelivery("20231009X001");
+            var d2 = await GetDelivery("20231009X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Not.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps1 = GetParts(d1);
+                var ps2 = GetParts(d2);
+                Assert.That(ps1, Has.Length.EqualTo(3));
+                Assert.That(ps1[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps1[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps2, Has.Length.EqualTo(1));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+            });
+
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.SplitDeliveryToLsNr(d1.Year, d1.DId, [1200, int.MaxValue, 1000], d2.LsNr));
+            d1 = await GetDelivery("20231009X001");
+            d2 = await GetDelivery("20231009X002");
+            Assert.Multiple(() => {
+                Assert.That(d1, Is.Null);
+                Assert.That(d2, Is.Not.Null);
+            });
+            Assert.Multiple(() => {
+                var ps2 = GetParts(d2);
+                Assert.That(ps2, Has.Length.EqualTo(4));
+                Assert.That(ps2[0].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[1].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[2].Weight, Is.EqualTo(1000));
+                Assert.That(ps2[3].Weight, Is.EqualTo(1000));
+            });
+        }
+
+        [Test]
+        public async Task TestDelete_01_Normal() {
+            using (var ctx = new AppDbContext()) {
+                Assert.That(await ctx.Deliveries.FindAsync(2022, 2), Is.Not.Null);
+            }
+            Assert.DoesNotThrowAsync(async () => await DeliveryService.DeleteDelivery("20220930X001"));
+            using (var ctx = new AppDbContext()) {
+                Assert.That(await ctx.Deliveries.FindAsync(2022, 2), Is.Null);
+            }
+        }
+    }
+}
diff --git a/Tests/ServiceTests/MemberServiceTest.cs b/Tests/ServiceTests/MemberServiceTest.cs
index 86e35e4..a095379 100644
--- a/Tests/ServiceTests/MemberServiceTest.cs
+++ b/Tests/ServiceTests/MemberServiceTest.cs
@@ -61,6 +61,8 @@ namespace Tests.ServiceTests {
                 Assert.That(m.DefaultKg?.Name, Is.EqualTo("Wolkersdorf"));
             });
 
+            vm = new MemberAdminViewModel();
+            await InitViewModel(vm);
             Assert.DoesNotThrow(() => vm.FillInputs(m));
             Assert.Multiple(() => {
                 Assert.That(vm.MgNr, Is.EqualTo(205));
@@ -179,6 +181,8 @@ namespace Tests.ServiceTests {
                 Assert.That(m.IsFunktionär, Is.True);
             });
 
+            vm = new MemberAdminViewModel();
+            await InitViewModel(vm);
             Assert.DoesNotThrow(() => vm.FillInputs(m));
             Assert.Multiple(() => {
                 Assert.That(vm.MgNr, Is.EqualTo(999));
@@ -268,6 +272,8 @@ namespace Tests.ServiceTests {
                 Assert.That(m.ExitDateString, Is.EqualTo($"{exitDate:yyyy-MM-dd}"));
             });
 
+            vm = new MemberAdminViewModel();
+            await InitViewModel(vm);
             Assert.DoesNotThrow(() => vm.FillInputs(m));
             Assert.Multiple(() => {
                 Assert.That(vm.IsActive, Is.False);
@@ -314,6 +320,8 @@ namespace Tests.ServiceTests {
             }
 
             Assert.That(m, Is.Not.Null);
+            vm = new MemberAdminViewModel();
+            await InitViewModel(vm);
             Assert.DoesNotThrow(() => vm.FillInputs(m));
             Assert.Multiple(() => {
                 Assert.That(vm.MgNr, Is.EqualTo(210));